A peach is a very sweet, juicy fruit with an edible peel and a hard pit in the middle. Peaches vary in color from almost white to yellow and pinkish-red.
Peaches grow on trees in temperate climates — they need warm weather, but they also require a hard freeze in the winter to produce fruit. Before the fruit grows on the tree, it blooms in beautiful pink blossoms. Ripe peaches drip with sweetness. Informally, you can refer to something or someone this nice as a peach: "Thanks for driving me to school today! You're a peach!"